上第

shàngdì
top notch; highest quality

CEDICT

first-class; superior; first-rate

Wiktionary

  1. 最高等级或最优异的品质。《后汉书．卷三四．梁统传》：「其四方调发，岁时贡献，皆先输上第于冀。」唐．李华〈赠礼部尚书清河孝公崔沔集序〉：「关外诸侯，公为上第，由是分掌选署，仕进之族知劝焉。」也作「上等」。
  2. 考试成绩最优的等第。

重編國語辭典

Entry Composition

1 上 shàng
  1. (bound form) up; upper; above; previous
  2. first (of multiple parts)
  3. to climb; to get onto; to go up
  4. to attend (class or university)
  5. (directional complement) up
  6. (noun suffix) on; above
2 第 dì
  1. (prefix indicating ordinal number, as in 第六 dìliù "sixth")
  2. (literary) grades in which successful candidates in the imperial examinations were placed
  3. (old) residence of a high official
  4. (literary) but; however
  5. (literary) only; just